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Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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New material 'mines' copper from toxic wastewater
New material 'mines' copper from toxic wastewater

Additional X-ray experiments showed that ZIOS is highly selective to copper ,ions, at a pH below 3—a significant finding, as the pH of ,acidic, mine drainage is typically a pH of 4 or lower.

Effects of sulfate ions and slightly acidic pH conditions ...
Effects of sulfate ions and slightly acidic pH conditions ...

The feasibility of utilizing CTAB-,silica gelatin composite, (C-SGC) to remove hexavalent chromium from aqueous solutions under different conditions was investigated. Removal of chromate was assessed through evaluation of the adsorption kinetics of chromate ,ions, on the composite under equilibrium conditions in the presence of sulfate ,ions, and at a slightly ,acidic, pH condition (pH 5.8).

Wastewater Treatment during PCB Fabrication Process | PSPCB
Wastewater Treatment during PCB Fabrication Process | PSPCB

A large number of metal ions and complexes such as Cu2+, Ni2+, Ag+, Au+, Sn2+/Sn4+, and Pb+ in PCB wastewater are harmful to animals, plants and the environment.

Wastewater Treatment through Low Cost Adsorption ...
Wastewater Treatment through Low Cost Adsorption ...

7/4/2016, · In this case, counterions with lower K ps values are used, for instance sulphide ions (S 2 −) are used to improve the wastewater treatment of waters containing mercury or cadmium. Most of the treatments employed in our country only consider a alkaline chemical treatment by contacting the acidic stream with CaCO 3 or CaO or Ca ( OH ) 2 raising the pH up to a point where metals are partially …

Application of Ferrate for Advanced Water and Wastewater ...
Application of Ferrate for Advanced Water and Wastewater ...

22/8/2019, · The degradation potential of ferrate for water and ,wastewater, treatment mainly depends upon the pH, initial ferrate concentration, presence of coexisting ,ions, and temperature . They can be easily reduced to insoluble and non-toxic Fe(III) species and can adsorb organic compounds, resulting in its removal [ 21 ].

[SnS4]4- clusters modified MgAl-LDH composites for mercury ...
[SnS4]4- clusters modified MgAl-LDH composites for mercury ...

The high acidity of wastewaters containing mercury ions (Hg2þ) can complicate its safe disposal (Chu et al., 2015; Fakhri, 2015). In addition, wastewater from smelting process is a chal-...

What is Acidic Water and How Do You Treat It? – Fresh ...
What is Acidic Water and How Do You Treat It? – Fresh ...

As the acid water flows through the metal pipes, it leaches the metal ions from the pipes and introduces them to your water supply. This means the water can potentially contain levels of iron, manganese, copper, zinc, and lead. Drinking elevated levels of heavy metals can be toxic, especially lead.

WO2005009908A2 - System and method for treatment of acidic ...
WO2005009908A2 - System and method for treatment of acidic ...

The first reverse osmosis device treats ,wastewater, having pH that is less than about 3.5 and the second reverse osmosis device treats ,wastewater,, from the first reverse osmosis device, having a pH that is about 6 or higher.

Wastewater Treatment during PCB Fabrication Process | PSPCB
Wastewater Treatment during PCB Fabrication Process | PSPCB

A large number of metal ions and complexes such as Cu2+, Ni2+, Ag+, Au+, Sn2+/Sn4+, and Pb+ in PCB wastewater are harmful to animals, plants and the environment.

pH of Water - Environmental Measurement Systems
pH of Water - Environmental Measurement Systems

Acidic, soils in the Amazon cause many of the lakes and rivers to naturally have low pH values ³⁸. Due to the dissolved humic substances from runoff and uptake, “blackwater” sources can have a pH as low as 4.43. “Clearwater” sources will have a slightly higher, but still ,acidic,, pH value ³⁸.

New material 'mines' copper from toxic wastewater
New material 'mines' copper from toxic wastewater

Additional X-ray experiments showed that ZIOS is highly selective to copper ,ions, at a pH below 3—a significant finding, as the pH of ,acidic, mine drainage is typically a pH of 4 or lower.

pH paranoia: Understanding alkaline water claims | Water ...
pH paranoia: Understanding alkaline water claims | Water ...

The acidic solution has more free hydrogen ions and the alkaline solution has fewer free hydrogen ions. Any substance that lowers pH is an acid and any substance that raises it is a base. Buffers are substances that enable water to resist pH change when an acid or base is added.

URI pH and Alkalinity
URI pH and Alkalinity

Hydrogen (H+) ,ions, (,ions, are atoms or groups of atoms with negative or positive charge) control acidity levels. pH measures the concentration of H+ and hydroxide (OH-) ,ions, which ,make, up water (H 2O): H+ + OH-= H 2O When the two ,ions, are in equal concentration, the water is neutral, whereas the water is ,acidic, if H+ > OH-and basic when OH-> H+.

Wastewater Treatment during PCB Fabrication Process | PSPCB
Wastewater Treatment during PCB Fabrication Process | PSPCB

A large number of metal ,ions, and complexes such as Cu2+, Ni2+, Ag+, Au+, Sn2+/Sn4+, and Pb+ in PCB ,wastewater, are harmful to animals, plants and the environment.

pH of Water - Environmental Measurement Systems
pH of Water - Environmental Measurement Systems

Acidic, soils in the Amazon cause many of the lakes and rivers to naturally have low pH values ³⁸. Due to the dissolved humic substances from runoff and uptake, “blackwater” sources can have a pH as low as 4.43. “Clearwater” sources will have a slightly higher, but still ,acidic,, pH value ³⁸.

pH of Water - Environmental Measurement Systems
pH of Water - Environmental Measurement Systems

Acidic, soils in the Amazon cause many of the lakes and rivers to naturally have low pH values ³⁸. Due to the dissolved humic substances from runoff and uptake, “blackwater” sources can have a pH as low as 4.43. “Clearwater” sources will have a slightly higher, but still ,acidic,, pH value ³⁸.

WO2005009908A2 - System and method for treatment of acidic ...
WO2005009908A2 - System and method for treatment of acidic ...

The first reverse osmosis device treats ,wastewater, having pH that is less than about 3.5 and the second reverse osmosis device treats ,wastewater,, from the first reverse osmosis device, having a pH that is about 6 or higher.

URI pH and Alkalinity
URI pH and Alkalinity

Hydrogen (H+) ,ions, (,ions, are atoms or groups of atoms with negative or positive charge) control acidity levels. pH measures the concentration of H+ and hydroxide (OH-) ,ions, which ,make, up water (H 2O): H+ + OH-= H 2O When the two ,ions, are in equal concentration, the water is neutral, whereas the water is ,acidic, if H+ > OH-and basic when OH-> H+.

What is Acidic Water and How Do You Treat It? – Fresh ...
What is Acidic Water and How Do You Treat It? – Fresh ...

As the acid water flows through the metal pipes, it leaches the metal ions from the pipes and introduces them to your water supply. This means the water can potentially contain levels of iron, manganese, copper, zinc, and lead. Drinking elevated levels of heavy metals can be toxic, especially lead.

pH paranoia: Understanding alkaline water claims | Water ...
pH paranoia: Understanding alkaline water claims | Water ...

The ,acidic, solution has more free hydrogen ,ions, and the alkaline solution has fewer free hydrogen ,ions,. Any substance that lowers pH is an acid and any substance that raises it is a base. Buffers are substances that enable water to resist pH change when an acid or base is added.

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